A headphone 10 has a pair of sound generating units 16 designed to be placed adjacent to ears of a user and a vibration generating unit 14 designed to be placed on a back neck of the user. In response to an audio signal, the sound generating units 16 generate acoustic sound and then provide it to the ears. Simultaneously with this, in response to the audio signal, the vibration generating unit generates vibrations to be provided to the back neck of the user. Then, the user will perceive the acoustic sound through ears and the vibrations through the back neck simultaneously. This provides the user with a dynamic sound effect.
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15. A method of providing acoustic sound and vibrations simultaneously, comprising:
providing an audio signal; driving a pair of acoustic transducers in response to said audio signal to generate corresponding acoustic sound, said pair of said acoustic transducers being placed adjacent to respective ears of a user; driving a vibrator in response to said audio signal to generate corresponding vibrations, said vibrator being placed on a back of a neck of said user between said pair of acoustic transducers; and transmitting the vibrations toward each of said pair of acoustic transducers by a band connecting said vibrator to each of said acoustic transducers.
1. A headphone apparatus, comprising:
a U-shaped band having opposed opposite ends; a pair of sound generating units, each of said sound generating units including an acoustic transducer and being supported at a respective one of said opposite ends of said band so as to be placed adjacent to a left ear and a right ear of a user, respectively; and a vibration generating unit including a vibrator, said vibration generating unit being supported at an intermediate portion of said band so as to be placed on a back of a neck of the user; and wherein said pair of sound generating units and said vibration generating unit are arranged such that, in response to an electric audio signal, each of said acoustic transducers generate acoustic sound while said vibrator simultaneously generates vibrations, said band being operable to transmit the vibrations to each of said opposed opposite ends so that the vibrations are transmitted to a user at least at the back of the neck, at the left ear, and at the right ear.
2. The headphone apparatus as recited in
3. The headphone apparatus as recited in
4. The headphone apparatus as recited in
5. The headphone apparatus as recited in
7. The headphone apparatus as recited in
8. The headphone apparatus as recited in
9. The headphone apparatus as recited in
10. The headphone apparatus as recited in
11. The headphone apparatus as recited in
12. The headphone apparatus as recited in
13. The headphone apparatus as recited in
14. The headphone apparatus as recited in
16. The method of
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The present invention relates to a headphone apparatus for use with a stereo audio system. In particular, the present invention relates to a headphone apparatus for preferably use with a portable stereo audio device. Also, the present invention relates to a method for providing sophisticated and dynamic sound through a headphone device.
U.S. Pat. No. 5,867,582 as well as its original Japanese Patent Application No. 7/288887, both assigned to the applicant, discloses a headphone device having an elongated headband in the form of approximately semicircular configuration. As is known in the art, the headband is provided at its opposite ends with acoustic transducers, respectively. In addition to this, vibrators are provided adjacent to the transducers at opposite ends of the headband, respectively.
With the headphone device, an audio signal is transmitted to the left and right acoustic transducers. The transducers generate stereo acoustic sound in response to the audio signal. On the other hand, a limited band of frequency, i.e., lower frequencies, of the audio signal is transmitted to the vibrators. In response to the lower frequencies, the vibrators generate vibrations. The generated acoustic sound and vibrations are simultaneously provided to the user who wears the headphone device 10. This allows the user to receive a dynamic stereo sound with vibrations.
However, the headphone device includes left and right vibrators, which disadvantageously causes the headphone device to be heavier.
Also, as is known in the art, in order to support the headphone device in a stable state on the user's head, the headband is configured in the form of reversed "U" so that it can be extended from one ear to another over the head. However, the headband may prevent the user from his or her operation for taking on and off his or her hat. For example, if the user wears the headphone over the hat, in order to take off his or her hat the user must take off the headphone before taking off his or her hat. Contrary to this, if the user wears the headphone under the hat, in order to take off the headphone the user must take off his or her hat before taking off the headphone.
Therefore, an object of the present invention is to provide a headphone apparatus capable of providing dynamic stereo sound concurrent with vibrations.
Another object of the present invention is to provide a headphone apparatus which allows the user to take on and off the headphone without any need for taking off the hat and which allows the user to take on and off the hat without any need for taking off the headphone.
Another object of the present invention is to provide a stylish, well-fashioned headphone apparatus.
Another object of the present invention is to provide a method for providing a stereo sound with vibrations, for preferably use in the headphone apparatus.
For those purposes, a headphone apparatus according to the present invention comprises a pair of sound generating units each having acoustic transducers. The sound generating units are designed to be placed adjacent to left and right ears of a user, respectively. The headphone apparatus also has a vibration generating unit having a vibrator. The vibration generating unit are designed to be placed on a back of user's neck. In operation, in response to an audio signal, the electric transducers generate acoustic sound and the vibrator generates vibrations simultaneously. The acoustic sound is perceived by the left and right ears of the user. On the other hand, the vibrations are perceived at the back neck of the user. This allows the user to perceive the acoustic sound simultaneously with the vibrations, which provides the user with a sophisticated and dynamic combination of the sound and vibrations.
In another aspect of the headphone apparatus of the present invention, the headphone apparatus further comprises a U-shaped band having opposed opposite ends. Also, the band supports the sound generating units at the opposite ends, respectively, and the vibration generating unit at its intermediate portion. This allows the user to perceive the vibrations at three portions; back neck and left and right ears. This means that the user can perceive a dynamic sound effect.
In another aspect of the headphone apparatus of the present invention, each of the sound generating units includes an arm, the arm being connected at its one end with one of the opposite ends and extended radially outwardly from an axis extending across the opposed opposite ends of the band. Also, the electric transducer is provided at the other end of the arm. This allows the generated vibrations are transmitted through the band and arms to the user's ears.
In another aspect of the headphone apparatus of the present invention, the arms are rotatably connected with the opposed opposite ends about the axis. This allows the headphone apparatus to adjust a distance between the sound and vibration generating units according to the corresponding size, i.e., the distance from the ear to the back neck, of the user.
In another aspect of the headphone apparatus of the present invention, each of the arms has a spring which biases the arm about the axis toward the band so that the vibration generating unit is forced onto the neck back of the user. This allows the vibration generating unit to be positively placed on the back neck of the user, causing the user to perceive dynamic stereo sound with vibrations.
In another aspect of the headphone apparatus of the present invention, the arm includes a housing for receiving the acoustic transducer. Also, the housing is sized and shaped so that it can be placed on an auricle of said user. This permits the headphone apparatus to be small sized, light-weighted, and easy to carry.
In another aspect of the headphone apparatus of the present invention, the vibrator is fixed in the band. With this arrangement, the vibrations are transmitted through the band to the user's back neck and ears.
In another aspect of the headphone apparatus of the present invention, the band has left and right elastic portions, each of the elastic portions being extended from the vibration generating unit and the pair of sound generating units. With this arrangement, the generated vibrations is increased and thereby transmitted the entire length of the band, which causes the user to perceive more dynamic sound with vibrations.
In another aspect of the headphone apparatus of the present invention, the vibration generating unit receives a specific band of frequency in the audio signal and generates vibrations in response to the specific band of frequency. With this arrangement, the vibrations are generated from the specific band of frequency.
In another aspect of the headphone apparatus of the present invention, the specific band of frequency includes a lower frequency component in the audio signal. With this arrangement, in particular at listening music, the user can perceive the sound and vibrations of low frequencies at the same time. Namely, the user can perceive a realistic performance in which the lower frequencies are strengthened.
In another aspect of the headphone apparatus of the present invention, the headphone apparatus comprises a controller which controls the specific frequencies to be received by the vibration generating unit. This allows the user to control the level of the vibrations depending upon his or her preference.
In another aspect of the headphone apparatus of the present invention, the controller is provided in the band. With this arrangement, the user can control the level of the vibrations while listening.
Also, a method for providing acoustic sound and vibrations simultaneously, comprising the steps of:
providing an audio signal;
driving a pair of acoustic transducers in response to the audio signal to generate corresponding acoustic sound, the pair of the acoustic transducers being placed adjacent to respective ears of a user;
driving a vibrator in response to the audio signal to generate corresponding vibrations, the vibrator being placed on a back neck of the user.
In another method for providing acoustic sound and vibrations simultaneously, comprising the steps of:
providing an audio signal;
providing acoustic sound in response to the audio signal to left and right ears of a user; and
providing vibrations to a back neck of the user in response to a lower frequency component of the audio signal.
As can be seen from above, the headphone apparatus and the method therefor can provide acoustic sound and vibrations at the same time. Also, the headphone apparatus and the method therefor allow its user to take on and off the headphone apparatus irrelevant to whether he or she is wearing a soft or hard hat, and to take on and off the soft or hard hat irrelevant to whether he or she is wearing the headphone apparatus.
Referring to
As best shown in
Each of the sound generating units 16 has an arm 34 extending radially and outwardly from an axis 32 (shown in the phantom line in
The earphone housing 42 accommodates an acoustic transducer 44. Any type of conventional acoustic transducer may be used as long as it can transduce electric signal into corresponding sound. The transducer 44 is electrically connected with a headphone circuit 120 through wires 136 and 138 (see FIG. 11). To reveal and protect the wires, the arm 34 includes a passage 46 (see
Referring again to
Referring again to
The arm 34 is forced from the second position 64 toward the first position 62 when it is assembled with the band 12. For this purpose, as shown in
Referring again to
Referring to
As best shown in
Also, a yoke 100 is coaxially provided on the elastic plate 96. The yoke 100 has a cylindrical recess at its center in which cylindrical permanent magnet 102 and metal plate 104 are received. Preferably, the yoke 100, permanent magnet 102, and metal 104 are arranged in concentric fashion about a central axis 98 of the elastic plate 96 and secured on the elastic plate 96 by a fixing member 108 extending along the axis 98, thereby constituting a vibration assembly 99.
Further, a helical coil 110 is provided in the chamber. The coil 110 is fixed at its one end on the inner surface of the top wall of the cover 92 and extended into a cylindrical space defined between the permanent magnet 104 and a portion of the yoke 100 spaced away from the magnet. Therefore, when the helical coil 110 is biased with an electrical signal or variable voltage which varies with time, e.g., audio signal, it generates a magnetic field which in turn varies with time. This causes the permanent magnet 102 and also the vibration assembly 99 to vibrate or move reciprocally parallel to the axis 98. The vibration is then transmitted to the central portion 18 of the band 12. It should be noted that the amplitude of the vibration increases in proportion to the voltage applied to the coil 110.
A resonance frequency of the vibration assembly 99 is determined by its mass and the elasticity of the elastic plate 96. In this embodiment, the resonance frequency is set to be about 40 Hz from a number of listening tests performed. For this purpose, the elastic plate 96 is made of stainless plate having a thickness of 10 μm, for example, with its surface coated by a thin silicone rubber (not shown), thereby a suitable Q dump is attained.
The coil 110 in the vibrator 86 is electrically connected with a wire 144 (see FIG. 14). This wire 144 is extended through the passage 112 defined in the connecting portion 22 into the left chamber 80 of the band 12. The wire 138 connected at its one end with the acoustic transducer 44 mounted in the right arm 34 runs through one passage 112 in the right connecting portion 22, the cavity 84 of the vibration output 14, and the other passage 112 in the left intermediate portion 22 of the band 12 into the left chamber 80.
As shown in
Referring to
Also, the audio device 130 includes a headphone drive circuit 120, replay device 131 for playing tape or CD, for example, remote control signal input circuit 133. Also, the headphone drive circuit 120 has two input terminals 122 and 124 connected to outputs of left (L) and right (R) channel signals, respectively, of the replay device 131. The terminals 122 and 124 are connected through variable resistances 146a and 146b in the main volume 146, amplifiers 132 and 134, and wires 136 and 138 with left and right transducers 44, respectively. Further, the volume 128b of the remote controller 128 is provided in the wires 136 and 138 for controlling the output to the headphone device 10.
The amplifiers 132 and 134 are connected at its output with a filter circuit 140. The filter circuit 140 filters a signal component having specific a lower band of frequency of the input signal fed from the amplifiers. The filter circuit 140 is in turn connected with a BTL driven amplifier 142 capable of further amplifying the lower band of frequency fed from the filter circuit 140. Further, the amplifier 142 is connected through the wire 144 with the vibrator 86.
In this arrangement, output level of the vibrator 86 is controlled by the main volume 146; though, it may be adjusted by, for example, a volume switch 128b provided in the remote controller 128. In this instance, the user can control the level of the vibration readily without reaching the audio device 130.
Further, the sixth wire 145 provided in the cord 126 is used for connecting between the transducers 44 and the ground 129 in the remote controller 128a. An input circuit 133 is used to receive a remote control signal from the remote control 128a of the controller 128 for controlling the operations of a control circuit (not shown) of the replay device 131. According to the remote control signal from the remote controller, the replay device 131 drives to transmit the audio signal to the input terminals 122 and 124 of the headphone drive circuit 120. The remote control 128a includes a plurality of push buttons or switches PB1, PB2, and PB3 and resistances R1, R2, and R3, so that the total circuit resistance varies depending upon which switch is turned on and thereby the operation selected by the pressed button will be performed.
When wearing the headphone device 10 so constructed, as best shown in
In the meantime, as already described above, the conventional headphone device has several disadvantages. For example, the left and right vibrators each mounted adjacent to the transducers render the conventional headphone device heavier. Also, the device is supported adjacent to the left and right ears. This requires the headband to be designed so that the sound generating units are placed on the respective ears with a pressure of about 200 g.
Contrary to this, the headphone device 10 of the present invention is supported by three portions, i.e., left and right ears and the back neck. This allows the band 12 to be designed so that it applies only about 50 g on respective ears. Also, the headphone device 10, as it is supported positively by three portions, remains in its regular position with the reduced pressure even when it would suffer from possible shocks at sporting such as jogging. Further, the headphone device 10 extends from one ear to another across the back neck, i.e., nothing exists on the head and therefore it allows the user to put on and off the soft or hard hat without any difficulty.
In operation of the headphone device 10, the replay device 130 produces an audio signal of the music, for example. The reproduced signal is transmitted into the input terminals 122 and 124 of the headphone drive circuit 120. Using the volume 146, the signal can be amplified at the amplifiers 132 and 134. Then, the amplified signal is transmitted through wires 136 and 138 to the left and right transducers 44, respectively. The transducers 44 reproduce a sound corresponding to the amplified signal. Also, the signal is filtered at the filter circuit 140 which passes frequencies up to 200 Hz, preferably up to 150 Hz, and cuts out remaining frequencies. The signal consisting of the low frequencies fed out of the filter circuit 140 is then amplified at the amplifier 142 and further transmitted through the wire 144 to the coil 110 of the vibrator 86. This causes the permanent magnet 102 and then the vibration member 99 to vibrate in accordance with the low frequencies, which vibration is transmitted through the elastic plate 96 to the band 12.
This allows that, the vibration output 14 of the worn headphone device 10 provides the generated vibrations through the band 12 to the user's back neck. A part of the vibrations is also transmitted through the connecting portions 22 and the end portions 20 of the band 12, and then the earphones 42 to the auricles 30 of the user 24. This allows the user 24 to perceive the vibrations at three portions, i.e., mainly at the back of the neck and additionally at the left and right ears.
In addition, although the conventional headphone device provides the user with vibrations at limited portions, i.e., only ears, the headphone device according to the present invention supplies the vibrations to the user at an extended area from one ear to the other around the back of the neck. This means that, although the headphone device 10 of the present invention has only one vibrator and therefore generates less vibration energy than the conventional headphone device with two vibrators, i.e., half of the latter, the vibration energy generated in the headphone device of the present invention is effectively perceived by the user.
Although the headphone device 10 is connected with the audio device 130 through the remote controller 128, the remote controller 128 may be eliminated. In this instance, the headphone device 10 is connected directly to the audio device 130. Also in this instance, the headphone device 10 may be provided with various switches for controlling the volume and so on. For example, referring to
Also, although the earphone 42 provided at the tip of the arm 34 is a so-called inner-ear type earphone which is sized and shaped to be held on the auricle 30, it may be any type of conventional ones including a so-called outer-ear type earphone to be placed over the ear.
Further, different size of headphones, i.e., large size and small size headphones, may be prepared. For example, for the large size headphone for adult, as shown in
Furthermore, in the previous embodiment, the spring 72 mounted at the connection of the arm 34 and the band 12 is used as the biasing means for forcing the arm 34 to its first position. However, the biasing means is not limited thereto, and may be a helical coil spring which forms the extended portion 38 of the arm or its part. In this instance, the arm 34 may be integrally connected with the band 12.
Thus, an improved headphone device is disclosed. While the embodiments and applications of this invention have been shown and described, and while the best mode contemplated at the present time by the inventors has been described, it should be apparent to those skilled in the art that many more modifications are possible without departing from the inventive concepts therein. In addition, the present invention can be expanded, and is not to be restricted except as defined in the appended claims and reasonable equivalence departing therefrom.
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